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Engine control and emission control system for Your Volkswagen Passat SUV Sixth Generation (2005-2010)

Engine control and emission control system  
Introduction  
In this section you’ll find information about:  
Indicator lights  
Indicator lights  
Catalytic converter  
Diesel particulate filter  
More information:  
Shifting gears  
Refueling  
Fuel  
Engine oil  
Vehicle battery  
Notice about data recorded by vehicle control modules  
Towing  
WARNING  
The vehicle exhaust system and the catalytic converter or diesel particulate filter get very hot.  
This can cause a fire and serious personal injury.  
Never park where parts of the hot exhaust system and catalytic converter could ignite  
flammable materials, such as brush, leaves, dry grass, spilled fuel, etc.  
Never apply additional undercoating or rust proofing on or near the exhaust manifold,  
exhaust pipes, catalytic converter, diesel particulate filter, or heat shields.  
WARNING  
California Proposition 65 Warning  
Engine exhaust, some of its constituents, and certain vehicle components contain or emit  
chemicals known to the State of California to cause cancer and birth defects and  
reproductive harm. In addition, certain fluids contained in vehicles and certain products of  
component wear contain or emit chemicals known to the State of California to cause cancer  
and birth defects and reproductive harm.  
Indicator lights  
Please first read and note the introductory information and heed the WARNINGS  
Lights  
up  
Possible cause  
Proper response  
Have engine checked immediately by an  
authorized Volkswagen dealer or authorized  
Volkswagen Service Facility.  
Engine control malfunction (Electronic  
Power Control).  
ꢀꢁꢂ  
Diesel engine pre-glow before engine  
start-up.  
Ease off the accelerator. Carefully drive to the  
nearest authorized Volkswagen dealer or  
authorized Volkswagen Service Facility. Have  
engine checked.  
Engine control / monitoring system  
malfunction (engine Malfunction Indicator  
Light - MIL)  
Drive about 15 minutes in 4th gear (manual  
transmission) or in Drive (D) (automatic  
transmission) and at a speed of about  
45 mph (70 km/h). There may be a noticeable  
smell.  
Diesel particulate filter clogged with soot.  
Obey speed limits ⇒ꢀ  
.
See an authorized Volkswagen dealer or  
authorized Volkswagen Service Facility if the  
indicator light is still on.  
Flashes  
Possible cause  
Proper response  
Have engine checked immediately by an  
authorized Volkswagen dealer or authorized  
Volkswagen Service Facility.  
Engine control malfunction (diesel  
engine).  
Ease off the accelerator. Carefully drive to the  
nearest authorized Volkswagen dealer or  
authorized Volkswagen Service Facility. Have  
engine checked.  
Misfire, which can damage the catalytic  
converter.  
When the ignition is switched on, several warning and indicator lights come on briefly for a function  
check. They go out after a few seconds.  
WARNING  
Obey all applicable legal requirements when cleaning the diesel particulate filter.  
Clean diesel particulate filter as recommended only when visibility, weather, road, and  
traffic conditions permit.  
Do not put others at risk.  
NOTICE  
Failure to heed warning lights or text WARNINGS can result in vehicle damage.  
As long as the indicator lights , or ꢀꢁꢂ are on, expect engine malfunctions, increased fuel  
consumption and loss of engine efficiency.  
Catalytic converter  
Please first read and note the introductory information and heed the WARNINGS  
The catalytic converter provides exhaust gas after-treatment to help reduce pollutants in the exhaust  
gas. To help ensure long service life of the exhaust system and gasoline engine catalytic converter:  
Only use unleaded fuel.  
Never completely empty the fuel tank.  
Do not exceed the correct oil level, Engine oil.  
Do not tow the vehicle to start it, but use a jump-start instead, Jump-starting.  
If you experience misfires, loss of power or the engine is not running smoothly while driving, reduce  
speed immediately and have the vehicle checked by an authorized Volkswagen dealer or authorized  
Volkswagen Service Facility. Otherwise, gasoline could reach the exhaust system and get into the  
atmosphere. The catalytic converter could also be damaged by overheating!  
Under certain engine conditions, you may smell a sulfur odor. This is not an indication of a  
malfunctioning emission control system. This depends upon the sulfur content of the diesel fuel.  
Diesel particulate filter  
Please first read and note the introductory information and heed the WARNINGS  
The diesel particulate filter helps take soot particles out of the exhaust. The soot particles are collected  
and periodically burned in the filter at high temperatures (regeneration). The resulting heat can cause  
the temperature inside the engine compartment to increase.  
Regeneration can create noises, slight smells, and, regardless of the outside temperature, cause the  
radiator fan to start – even after the engine has been turned off.  
Volkswagen recommends frequently driving longer distances to help clean the filter. On vehicles with  
automatic transmissions, the engine speed may also increase slightly. The indicator light will not come  
on.  
Use only Ultra Low Sulfur Diesel (ULSD) fuel No. 2, Fuel.  
Never refuel with gasoline or fuel oil or biodiesel that does not comply with the special  
requirements for diesel fuel ,Diesel fuel.  
Never drive until the fuel tank is completely empty.  
Do not exceed the correct oil level, Engine oil.  
Do not tow the vehicle to start, but use a jump-start instead, Jump-starting.  
On vehicles with automatic transmissions, increase the engine speed slightly while driving to  
automatically start cleaning the diesel particulate filter. This helps to minimize clogging of the filter. The  
indicator light ÷ will not come on.  
Under certain engine conditions, you may smell a sulfur odor. This is not an indication of a  
malfunctioning emission control system. This depends upon the sulfur content of the diesel fuel.